混沌序列产生方法及其在图象加密中的应用  

The Generation of Chaotic Sequence and Its Application to Image Encryption

作　　者：孙秀花[1] 戴跃伟[1] 王执铨[1] 

机构地区：[1]南京理工大学自动化系,南京210094

出　　处：《南京师范大学学报（工程技术版）》2004年第1期56-59,78,共5页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省自然科学基金 [1.混沌控制理论及其用于多媒体信息安全的研究 (BK2 0 0 10 5 4) ;2 .信息隐藏技术的信息论模型研究(BK2 0 0 2 10 1) ]

摘　　要：介绍了一个混沌二值序列产生和实验的软件平台 ,它利用三种混沌动力学模型 ,即一阶时延模型、Lorenz模型、Lo gistic模型产生加密序列 ,并通过大量实验对产生的序列的伪随机性、敏感性、重复性进行了测试 .测试表明混沌伪随机序列具有良好的加密性能 .本系统还可以提供对多种对象的加 /解密实验和分析 .同时也给出了对 .bmp格式图像加Chaos systems are characterized by its critical sensitivity to initial conditions and parameters, pseudo-randomness, and determinability. In this paper a software platform is brought forward, which can be used to generate and evaluate chaotic binary sequences. It utilizes three typical kinds of chaotic dynamics model to generate encryption sequences. Massive experiments on randomness, sensitivity and repeatability verify that chaotic sequence has higher performance in encryption. Besides, it has the capability to encrypt and decrypt many kinds of objects. The experimental results have been given on bitmap image encryption as an example.

关 键 词：混沌序列 性能测试 序列密码 位图图像 图象加密 信息安全 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]